3m Innovative Properties Company

Matthew M Philippi

Encai Hao

Nicholas A Johnson

Gary Timothy Boyd

Daniel W Hennen

Brett J Sitter

Michael E Lauters

Chi Zhang

Mary M Pichotta

A liquid crystal display comprises a backlight module comprising a reflective polarizing film, a light control film and a liquid crystal panel disposed between the backlight module and the light control film. The light control film comprises a light input surface and a light output surface opposite the light input surface and alternating transmissive and absorptive regions disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30.

Liquid crystal display having a frontside light control film

An optical stack including a periodically varying optical film layer and a grating assembly for reducing moir&#xe9; is described. The grating assembly includes first and second layers where an interface between the first and second layers define a grating having a peak to valley height and an index contrast. The index contrast multiplied by the peak to valley height may be between 150 nm and 350 nm and the grating has a pitch in the range of 2 micrometers to 50 micrometers. Each of the first and second layers may be viscoelastic or elastomeric adhesive layers, crosslinked resin layers, or soluble resin layers.

Optical stack including a grating

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Saint Paul, MN, United States of America

Matthew M Philippi